Learning clock



FIG. 1 is a front elevational view of a learning clock showing my new design;

FIG. 2 is a top edge view thereof, the right, left and bottom edge views thereof being identical;

FIG. 3 is an axonometric view thereof; and,

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a learning clock, as shown and described. 